Code Q&A

Can Table 310.15(B)(6) (reduced size wire for dwelling unit service) be used to size the service neutral conductor for a single-family dwelling?

Q. Can Table 310.15(B)(6) (reduced size wire for dwelling unit service) be used to size the service neutral conductor for a single-family dwelling?

A. Yes, this table can be used to size the grounded neutral conductor of a 3-wire, single-phase 120/240V service or feeder that serves as the main power feeder, based on the feeder calculated load in accordance with 220.61.

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